Improvement in gas-regulators



acts as a guide.

PATENT FFICE.

DAVID PEEBLES, OF'EDINBURGH, SCOTLAND.

IMPROVEMENT IN GAS-REGULATORS.

Specification forming part of Letters Patent No. 172,768, dated January25, 1876; application filed October 8, 1875.

To all. whom it may concern:

Be it known that I, DAVID BRUCE PEE- BLES, of Edinburgh, Scotland, haveinvented new and useful Improvements in Apparatus for Controlling andRegulating the Flow of Gas, of which the following is a specification:

This invention relates to improvements applicable to stationgas-governors, district governors, and governors for public halls,factories, and dwelling-houses. The governors may be of the kind knownas wet or dry.

The wet governer consists of a bell working in a tank in water. Aroundthe bottom of the bell a float is made, which tends to raise it whenimmersed, and from the top and center of the bell is suspended a valve,the seat of which is fixed on the top of the .vertical inlet-pipe of thegovernor. On the bottom of the valve I arrange a closed tube about oneand a half times its diameter, and this works inside a tube whichcommunicates with the water by means of a pipe or connection passinglaterally through the vertical inlet and outlet pipes, and fixed theretoby nuts, the object of this arrangement being to give a pumping actionto the valve when it moves, which tends to steady the bell and obviatebobbing or oscillation by the gas-waves; or the tube at the bottom ofvalve may be open and work over another closed tube, which also Thepumping action, in this case, being with air, instead of water, makes itsuitable for wet or dry governors.

Thebell is inclosed in an air-tight tank or casing, and may be guided,in the well-known ordinary way, by pulleys working against the sides ofthe tank.

Another important feature of my invention is the manner in which thegovernor is acted on so as to increase, diminish, or maintain pressure.

In any part of the inlet gas-pipe or main a small tube is fixed, and inthe casing of the governor, preferably as near the cover as possible,another small tube is fixed. These tubes are connected to a small dry orwet governor, which may be of the Well-known ordinary construction.

Another tube connects the chamber above the bell with the outlet-pipe ormain, and into this tube is inserted a disk of tin or other incorrodible metal, through which a small hole is pierced, or a lavaburner-tip may be used. A stop-cock may also be employed separately orin conjunction with this small aperture.

Figure l is a sectional elevation of awet governor with my inventionapplied, the section being taken on line 00 an of Fig. 2. Fig. 2 is ahorizontal section of Fig. 1. Fig. 3 is a section of a dry governor,showing the application of my invention, the section being taken on theline y y of Fig. 4. Fig. 4 is a horizontal section of Fig. 3.

Similar letters of reference indicate corresponding parts.

A is the bell of the wetgovernor; B, the valve suspended from it toregulate the passage of gas through the opening 0 to the exitpipe D. Onthe bottom of this valve I have arranged the closed tube E, havingconnection with the water-spaceG by a small pipe, F.

This contrivance is to prevent, by the suction and pressure offered bythe water, the bell from dancing by the vibrations of the gas sometimesset in motion by the sudden opening and closing of cocks.

H is the small dry governor to be used for regulating thelarge governor.It is connected by apipe, I, with the main J, and by the pipe K with theupper chamber of the large gov ernor, and said upper chamber isconnected by pipe L with the outlet-pipe M, but the orifice admittingthe gas into this pipe is very small, to limit the flow of gas into theoutletpipe.

The governor E may be of any ordinary construction, and it may belocated any distance from the large governor-for instance, in the officeor room of the manager.

Instead of loading or unloading the bell of the large governor, in theusual manner, with Weights, the small governor only requires to beadjusted to give any desired pressure.

When weights are placed on the small governor an increased pressure ofgas is thrown on the bell of the large governor, opening the valve andgiving an increased outlet-pressure, and when weights arev taken off thesmall governor the pressure is taken off the bell. of the largegovernor, which thus responds with great nicety to every fluctuation inthe inlet or outlet pipes when more or less gas is drawn off forconsumption.

The action of the apparatus, when applied to the dry governor, isprecisely similar to that of the. wet.

The leather diaphragm or bellows D represents the bell, which is raisedby the weights at the end of the lever as the float raises the bell ofthe wet governor. The small governor is fixed and regulates the actionof the large dry governor exactly in the same Way as'the wet.

The small governor, applied in this manner to the wet or dry form, maybe so weighted and adjusted as to come into action at a fixed initialpressure, thus fitting them for district governors, which rise and fallwith the initial pressure when charged at the works. This responsiveaction only continues so long as the small governor does not act'; butthe moment it comes'into action by the increase of initial pressure itscontrolling power keeps the outlet-pressure steady at that point, how'-ever much the initial pressure may be increased.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- I p 1. The combination of valve B, suspended fromhell A, with tube E, connected by a pipe, F, with the water-space G, asand for the purpose specified.

2. The combination of a small governor, H, with the large governor, tocontrol and. regulate the press'ure of thegas in the large governor,substantially as specified.-

3. The tube L, with the perforated disk or burner-tip, connecting thechamber above the hell or diaphragm to the outlet-pipe, in "combinationwith an auxiliary governor, substantially as specified. V i p D. BRUCEPEEBLES. Witnesses:

T. B. MosHER,

ALEX. F. ROBERTS.

